Filter.



' PATENTBD JAN. 21,1908.

W. LOBBY. FILTER.

. APPLIU'AT'IONFILBD APR. 4. 1907.

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FILTER. APPLICATION FILED APB. 4. 1907.

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No. 877,206. PATENTBD JAN. 21, 1908.

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FILTER.

APPLIOATIoN FILED APR. 4. 19o?.

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l citizen of the United WILLIAM LOREY, OF PHILADELPHIA, PENNSYLVANIA.

FILTER.

y No. 877,206.

Specification of Letters Patent.

Patented Jan. 21, 1908.

Application filed April 4. 1907. Serial No. 366.417'.

To all whom it may concern:

Be it known that I, WILLIAM LOEEY, a States and resident of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain Improvements in Filters, of which the following is a specification.

The object of my invention is to roduce a filter of improved construction w ich will deliver1 a constant stream of filtered water and can at any time be readily cleansedand fresh filtering material readily introduced.

In the accompanying drawings, Figure'l is a general view of my improved filter in vertical section; Fig. 2 is an elevation of the left hand end as seen in Fig. 1, and Fig. 3 isa plan view with part broken away.

The hollow frame 4 is supported upon the hollow trunnions5 and 6 turning in bearings 7, 8, and 9 which are supported by the xed standsl 10 and 11. A gear 12, fixed to the bearing 8, meshes with a pinion 1'3 mounted on a shaft 14 which is carried by the hollow frame 4. The other end of the shaft 14 carries a bevel pinion 15 which engages with a gear rack 16 attached to the filter casing 17. The casing is carried by and revoluble with the frame 4 in the hollow water-tight bearings 18, 19 and 20 in which its trunnions 18, 19 and 20 are journaled.

Upon the base 25 of thel casing 17 are supported concentric cylinders 26, of porous stone or other suitable porous material, which are wra ped with wire 27 to strengthen them. ets of tubes 28 extend axially through the annular spaces 21 betweenA the porous cylinders. These tubes connect at their lower ends with the passages 29I cored in the base 25 and are provided with the o enings 30 near the lower ends above which t ey are closed by plugs 22, communication between the annular spaces and the passages being eected by the openings. The spaces between the cylinders are covered at their tops by annular caps 31 which fit upon adj acent cylinders. Sharp clean cut pebbles 66 are placed in the spaces and are preferably of tetrahedral form. The tubes 28 are provide-d near their upper ends with apertures 32 through which theyopen into the tops of the spaces 21 and below which they are closed by plugs 33. The tubes 28 extend upwardly through the annular caps 31 and communicate by openings 34 with a passage 34 which` communicates through the trunnion 18 and the hollow bearing' 18 with the passage 4 in the frame 4 and thence, by the passage 23, in the trunnion 6, the annular space 24', within which the trunnion revolves, and the passage 24 with the waste tank 40. The spaces 35, 36, and 37 adjacent to the cylinders communicate with each other by annular apertures 35,36 and 37 at their tops and at their lower ends open by passages 35, 36 and 37 intoa passage 38 which communicates through the hollow bearing 19 with the passage 71 in the frame 4.

A motor is o erated by waterfrom the tank 40 flowing through the pipe 51. The motor operates a shaft 52 carrying a worm 53 mshing'with a worm wheel 54 which is journaled in a frame 55 and engages a vertical screw 56. This screw passes through the end'v of a chamber 57, being splined thereinl to'prevent it from turning, and carries at itsupper end a piston 58. The chamber 57 is filled with powdered charcoal, or other suitable filtering material 59, and connected at its upper end with the passage for the raw water. When the motor 50 is operated it gives the piston 58 a slow uniform upward movement, feedin the filtering material evenly and regular y to the incoming water iiowing throughy the pipe 60 which communicates with the passage 60 in the trunnion 6, thence by the passage 4 in the frame 4 to the hollow bearing 20, and thence by the assage 29 tol andv through the o enings 30.

hen the filtering material is to e replaced in the chamber 57, the frame 55 is removed by disconnecting its supporting bracket 62, and the part 57', clamped on the end of the chamber 57 is removed, carrying with it the screw and piston. The chamber 57 is then inverted byv turning it about on the water tight bearings 63 and its other end closed by means of the valve 64, when it can be refilled with filtering material and afterward replaced in operative position and the valve 64 opened.

In the filtering operation the raw water, with the charcoal ickedup from the chamber 57 flows through ille passages 60, 60', 4, 29 and 30 into the spaces 21 and filters through the porous cylinders 26 into the spaces 35, 36 and 37 whence it escapes by the passages 38 and 71,` the clarified water being drawn off by the vpipe 70. As the water passes through the porous cylinders, it deposits its containedfiltering material on the walls of the chambers 21 until these walls are coated sufficiently to form an efficient filter for the and delivers water through the pipe 51 tothe motor 50, the head being suflicient to rotate vthe motor. This, acting through the mechanism described, causes the frame 4 carrying the filter to revolve on its hollow trunnions 5 and 6, at the same time rotating the filter in the frame 4 through the gears 12 and 13, thus disturbing and dislodging the deposits of impure matter together with the soiled V,coating of iiltering material in the spaces 21, which is carried off by the constant flow of Water introduced through the 4 assages 60 4, 29 and 30 to the s aces 21. l0 e 1 P lhe water carrying this waste material finds an outlet from the spaces 21 only through the orifices 32 in the ends of the tube 28, whence it fiows through the openings34, the passage 34 and the hollow frame 4,

through the passage 23 in the hollow trun-I nion 6to the pipe 24` leading to the tank 40. The waste Water is thus utilized tooperate the motor and effect the succeeding cleansing operation. Simultaneously with the above operation the piston 58 is slowly forced upward in the chamber 57 'feeding a predetermined amount of the filtering material 59 to the system for the recoating of the porous cylinders within the iilter casing. Having described my invention, I claim -1. In a filter, a porous septum, a liquid conduit leading to said septum, a chamber containing a iiltering material communicating with said conduit, a piston in said chamber, and means for moving said piston. 2. In a filter, a porous septum, a conduit leading thereto, a chamber containing filtering material communicating with said conduit, a piston movable in said chamber, a threaded rod for moving said piston, a wheel engaging and moving said threaded rod, and a motor connected with and operatingsaid wheel.

.3. In a filter, a porous septum, a conduit leading thereto and a conduit leading therefrom, a chamber containing filtering material communicating withy the conduit leading to said septum, a tank communicating with the conduit leading from said septum, a motor connected with said tank and operated by liquid discharged therefrom, and means operated by said motor for forcing filtering material into the conduit leading to said septum.

4.`In a iilter, a frame having passages therein and trunnions having passages therein, bearings in which saidtrunnions are journaled, a casing having hollow trunnions journaled in said frame and communicating with said passages, and one or more porous septa in said casing and dis osed between the passages through said hol ow trunnions.

5. In a lter, a frame having separate passages, trunnions iiXed to said frame-and having passages communicatingl with said frame passages, and a casing having truncommunicating with the passages therein.

6. In a iilter, a frame having journaled trunnions,' a casing having trunnions journaled in said frame; one or more porous septa in'said casing; a conduit extending through a frame trunnion, the frame and a casing trunnion to said septum or septa; a conduit extending from said septum or septa through one of said casing trunnions, said frame and one of said frame trunnions,' and mechanism for revolving said frame and casing.

7. In a iilter, a frame having journaled trunnions, a casing having trunnions journaled in said frame, filtering devices in said casing, means for passing Water toand from said casing, and gearing for simultaneously revolving said frame and casing. In testimony whereof I have hereunto set my name this 30thday of March, 1907, in the presence of the subscribing witnesses.

WILLIAM LOREY. Witnesses:

CARLYLE I-I. Ross, Jos. G. DENNY, Jr.

mons journaled in said frame with passages 

